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Merger-induced galaxy transformations in the ARTEMIS simulations

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If you have a question about this talk, please contact Martin Haehnelt.

In recent years, data from the Gaia space telescope has revealed a rich and complex history of the Milky Way. One particularly momentous event was a merger which formed the ‘Gaia Sausage’ (also known as Gaia Enceladus), the debris from a large dwarf galaxy which collided with the Milky Way 8-10 Gyr ago.

The effects of this merger on the Milky Way itself are not yet fully understood. In this talk, I will summarise the results of a study using the ARTEMIS cosmological simulations of Milky Way-like galaxies. I will focus on a range of transformations experienced by the Milky Way analogues, including dramatic re-orientations of the galactic discs (‘flipping’), and the disruption of disc stars onto extreme retrograde orbits (‘splashing’).

This talk is part of the Institute of Astronomy Galaxies Discussion Group series.

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